Needle-valve.



A. WAIT.

NEEDLE VALVE.

APPLICATION FILED JAN.13, 191s Patented Oct. 14, 1913.

IINITED %TATE .PATENT @FFIQE.

ALFRED WAIT; 0F HAMILTON, ONTARIO, CANADA.

1 '0 all who met may concern: I Be it known that I, ALFRED. WAIT, asubject-of the King of Great Britain, and a citizen of the Dominion ofCanada, residing at Mount Hamilton, in the city of Ham-- ilton, in thecounty of lVentworth, in the Province of Ontario, Dominion of Canada,have invented certain new anduseful Improvements-in Needle-Valves, ofwhich the following: is, a specification.

This invention relates to valves and it has forits main objectthe-provision of means wherebythe'valve is locked or held in suchmannerat any: desired position so that it cannot: be turned on or oil byaccident, but 1 only with the full know-ledge of the person usingitand-thereby preventing the inadvertent operation of the valve to allowthe gas or fluid to escape when not so required.

A further object of myinvention is to provide a simple and effectivemeans where by the locking device can be readily readjusted should thevalve becomewornor de fective- With these and other objects in View aswill be apparent from the following description,= my invention consistsin the-novel features of construction, arrangements andcombination ofparts hereinafter fully described, illustrated by the accompanyingsheet" of explanatory drawings forming a part of this specification, andmore particularly pointed out in the appended claims.

In thedrawings, Figure -1, is a side view of aneedle valve embodying-oneform of my invention. Fig. 2, is an end view of the same, ;or looking tothe left/hand of 1, with thehandle removed. Fig. 3, is a detail of amodified form' of attaching the hanger: and pawlto the valve stem; and,Fig. 4, is a plan of the same.

Similamcharacters of reference designate the same or similar partsthroughout the several views.-

The im roved needle valve comprises a body portion 1, adapted forfixture to the suppl pipe or other convenient part by a three edprojection 2; and 3, is the needle or pin hole-service extensioni 4, isa collar in engagement with the flange 5, and rigidly locked thereto bycenter punchings 6, 6; whichexpan-dthe'metal of the flange intocorrespondingly yshaped notches in the collar, and said collar is pro:videdwith an arcuateracki, disposed substantially at right angles to thevalve stem.

Patented oat.- 11a, 1e13,.

Serial No. 741,845.

8. Or said collar 4, may be secured to the flange 5, by an expandingtool adapted to force the metal thereof into appropriate" notches. Thevalve stem 8, is formed in the well known Way and is surrounded by apacking nut 9. The outer end of the-valve stem 8 is threaded toreceive-the clamping element or look nuts 10 whichclamp in posi- A 1tion an :L-shaped hanger compivismg. thearms .11 and 12, said latter armlying sub- I I stantially parallel-with the aforesaid stem 8.

This'arm 12 is fashioned'with parallel ears 14, islongitudinallyextended at 16, to have operative engagement withthe-aforesaidearcuate rack 7, for-the purpose hereafterexplained. It isto be particularly notedthat the hanger 11, is not threaded on the stem8, so that ready provision isprovided for its adjustment bothlongitudinally of thesaid stem 8, and arcuately relative to the rack 7.

17, is the valve handle or turn-wheel, and

it is threaded on to the aforesaid spindle and kept in adjusted positionby a lock nut 18.

It will be readily seen that my invention is equally applicable to anyform of needle valve or plug cock.

In the type of my invention shown by Figs. '3, and 4, I formthe-hanger'11, and

handle 17, integral, that is to say from one piece of sheet or castmetal appropriately bent to the desired configuration, and in such casesit will be obvious that the-com-- bined hanger and handle will not bethreaded on the stem 8, but be loosely mounted a thereon in order tomake possible readyadjustment of the pawl 14, relative to the arcuaterack 7, when the-valve is worn and needs re-setting to prevent leakage.

In use, the needle is screwed up tight and.

the pawl 14, adjusted'to engage 1n the right hand end-of thearcuate'raok 7, (Fig. 2) whereupon the parts 10 .17, and =18, areclamped together in rigidgengagementa To open the 1 valve the .user.simply depresses the pawl; 14, turns; thechandleal'i, jc0ntra olockewise to the requisite extent and releases the firmly.

said pawl. 14, ,when. the, valve, is lockediat that particular position.To close not be threaded on the spindle 8, asabo've,

. between sea the valve the handle 17, is reversely or clockwise turned,and it is to be particularly noted that the extreme right and left-handteeth of the arcuate rack 17, project radially outward farther than therest of the teeth and thereby limit the movement of the valve as thepawl 14 cannot be forced thereover. In some cases the rack 7, may beformedcircumferentially almost entirely around the collar 4, to allowfor thefurther opening of the valve, but it is to beobserved that insuch cases the pawl extension 16, will be lengthened in order to insureits engagement at all times with the rack 7, between its extremelimits.

. Obviously the details of shape and the proportions of the severalparts will be entirely dependent upon service conditions, and I wish topoint out that l may in some cases form the pawl carrier or hanger 11,integral with the valve lug as will be obvious to those skilled int eart to which my invention appertains. 0r, ll may form said hanger 11, asa longitudinal projection from the handle 17, in which case the latterwill set forth.

From the foregoing description itwill be seen that the safety device,while being quite easy to operate cannot be unlocked by accident, andthat the gas or fluid may be turned 0d and shut oil and vice versa.

vAs all-the working parts of the device are plainly seen by the user,one glance is suficient to show the necessity ofplacing the fin er orthumb on the latch to release it, an how to turn th plug'withoutstopping or turning to examine the rear of the valve. Having thusdescribed my invention, what I claim as new and desire to secure byLetters Patent, I

l. lln a device of the character described, the combination with a valvebody, of a valve stem rotative. therein, lock nuts carried by said valvestem a manually operable member carried by said valve stem, an L- shapedhanger one arm of which is clamped said lock nuts and the other arm ofwhich lies substantially parallel with said stem, a lock nut for lockithe manually operable member in clampe engagement with the hanger, an'arcuate rack having notched out portions into which the valve body isexpanded; said arcuate rack lying substantially parallel withsaidmanually operable member, and a spring actuated pawl pivoted -at thefree 'end vof the last named arm of the L-shaped hanger and adapted foren gagement with sai arcuate rack.

2. In a device of the characterdescribed,

a valve body having a threaded'extension,

manually operable member and images 'a needle valve stem threaded intosaid valve body, a packing nut threaded upon said threaded extension tocompress packing about said stem, a collar comprising an arouate rack,the material of the valve body being expanded into notched out portionsin said collar, said rack lying substantially at right angles to saidstem, a manually'operable member mounted upon the outer end of saidvalve stem and lying substantially parallel with said arcuate rack, aclamping element upon said valve stem, an L-shaped hanger one arm ofwhich is firmly clam ed between said manually operable mem er and saidclamping element and the other arm of which lies substantially parallelto said valve stem, parallel ears formedupon the free end of the lastnamed arm, a pawl comprising an end adapted to engage said rack and athumb piece lying substantially at right angles to the plane of movementof serving the double function of pivoting said pawl between said earsand of forcing saidpawl into engagement with said rack, one end of saidpivot member en aging the rear side of 'said thumb piece an the otherend engaging a portion of said arm.-

In a device of the character described, a valve body having a threadedextension, a needle-valve stem threaded into said valve body, a packingnut threaded upon said threaded extension to compress Eack'm about saidstem, an arcuate rack t reade upon saidthreaded extension, a manuallyoperable member mounted upon the outer end of said valve stem and lyingsubstantially parallel with said rack, a clamping element upon saidvalve stem, an L-shaped hanger one arm of which is clamped between saidmanually operable member and said clamping which lies substantiallyparallel to said valve stem, parallel ears formed upon the free end ofthe last named arm, a pawl com prising an end adapted to'en age saidrack and a thumb piece lying su stantially at right angles-to theplaneof movement of said end, and a pivot member of spring wire serving thedouble function ofpivoting said pawl between said ears and of forcinsaid pawl into engagement with said rac one end of said pivot memberengaging the rear side of said thumb piece. and the other end on agin aportion of said arm.

igne at Hamilton, in the county of Wentworth, Province of Ontario,Canada,

4 this 30th day of December, A. D. 1912.

ALFRED WAIT... In the presence of- ALFRED T. BRA'rmN,

:Gnarm Nrononson.

.element and the other arm of'

